/*
 * Copyright 2010 Pierre Heinzerling, Uwe Janner, Patrick Wright
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.upp.publinksky.operations.link;

import com.upp.publinksky.operations.util.ThemeLookup;
import com.upp.publinksky.util.JsonConversion;
import com.upp.publinksky.util.PMF;
import com.upp.publinksky.dao.LinkCommentDAO;
import com.upp.publinksky.dao.LinkDAO;
import com.upp.publinksky.dao.ThemeDAO;
import com.upp.publinksky.model.Link;
import com.upp.publinksky.model.LinkComment;
import com.upp.publinksky.model.Theme;
import com.upp.publinksky.util.UserUtil;

import javax.jdo.PersistenceManager;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.logging.Logger;

/**
 */

@SuppressWarnings({"unchecked"})
@Path("/link/delete")
public class LinkDelete {
    private static final Logger log = Logger.getLogger(LinkDelete.class.getName());

    @PUT
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public Response deleteItem(@QueryParam("linkId") final int id) {
        final String email = UserUtil.getCurrentUserEmail();
        log.info("delete link! " + id);
        PersistenceManager pm = PMF.get().getPersistenceManager();
        try {
            Link link = LinkDAO.reduceLinkScore(id, pm);
            Theme theme = ThemeLookup.checkedGetTheme(link.getTheme().getId(), pm);
            ThemeDAO.markUpdatedBy(theme, email, pm);
            
            LinkComment comment = LinkCommentDAO.getLinkCommentByUriAndEmail(email, link.getUriString(), pm);
            if (comment == null) {
                // no link for this user, add one
                comment = LinkCommentDAO.insertComment(link.getTheme(), email, link.getUriString(), "", theme.getLastUpdateCounter(), pm);
            }
            LinkCommentDAO.markNotGood(comment, theme.getLastUpdateCounter(), pm);
            return Response.ok(JsonConversion.toJson(theme), MediaType.APPLICATION_JSON_TYPE).build();
        } catch (Exception e) {
            e.printStackTrace();
            return Response.serverError().build();
        }
        finally {
            pm.close();
        }
    }
}